Insulated canopy-collar.



PATENTED APR. 28, 1908.1

T. H. BULLOCK, JR. INSULATED CANOPY COLLAR.

APPLICATION FILED AUG. 24, 190 6.

ivil memes UNITED STATES PATENT OFFICE.

THOMAS H. BULLOCK, JR, OF NEW YORK, N. Y., ASSIGNOR TO JOHN DALE, OF

' NEW YORK, N. Y.

INSULATED CANOPY-COLLAR.

Specification of Letters Patent.

Patented April 28, 1908.

To all whom it may-concem:

Be it known that I, THOMAS H. BULLOCK, Jr., a citizen of the UnitedStates, residing at the city of New York, in the county of New York andState of New York, have invented certain new and useful Improvements inInsulated Canopy-Collars, of which the following is a full, clear, andexact description.

My invention relates to electric fixtures, the same residingparticularly in a novel construction of canopy collar adapted to securethe canopy to the usual metallic tubing of the fixture and to insulatethe same there from. v

The invention consists of a canopy collar comprising a ring and a cap,having screwthreaded connections with each other and formin the twoparts of a clamp, and a contractibTe insulatingsleeve contained withinsaid collar and cap, adapted to embrace the metallic tubing of the"fixture and to be forced into frictional contact therewith by saidclamp.

The invention also consists in certain features and details ofconstruction'w'hich will be hereinafter more fully described andclaimed.

In the drawing forming part of this specification: Figure 1 is a faceview of a canopy showing the application of my invention thereto, thefixture tubing being shown in section; Fig. 2 is a central sectionalview through the canopy and collar Figs. 3 and 4 are detail, views ofthe screw-threaded ring forming part of the collar, and Fig. 5 is adetail view of the contractible insulating sleeve.

The canopy land the metallic tubing 2 of the fixture may be of anysuitable or usual construction. A v

My improved canopy collar consists of a ring 3, preferably of metal, ametallic cap l an a c he ontractible insulating sleeve 5. ring 3 hasbeen shown as extending through the usual opeing in the contractedportion of the canopy and is provided with anfupwardly extending flange6, said flange being pro- I vided for the purpose of facilitating thecon nectionnof the ring 3,-w'iththe'cano yrw'lhe said ring has beenshownat7 as so dered to -the canopy 1, but of course it may be connectedtherewith in any other suitable way. The ring 3 has also been shown asprovided with an inwardly extending flange 8, and with external screwthreads 9. The cap 4 is provided with internal screw threadscorresponding to the threads 9 on the ring 3 and adapted to meshtherewith. The outer end of the cap 4 is formed with an inwardlyextending, referably'beveled, ledge or flange 10. Wit in the clampformed by the ring 3 and the cap 4 is located. the contractibleinsulating sleeve 5. This has been shown as made in twosemi-cylindrical, separated halves, the inner bore of which is adaptedto receive the metallic tubing" 2 of the fixture.

The inner end of the insulating sleeve 5 is slightly reduced in diametersothat it extends rearwardly through the opening in the flange 8 of thering 3 and forms a shoulder 11 which bears against said flan e. Thisengagement of the shoulder 1.1 with the flange 8 is designed for thepurpose of preventing the bodily movement of the sleeve 5 toward thewall. The outer surfaceof the sleeve 5 is formed with an inclined orbeveled wall 12 which is ada ted to be engaged by the inner edge of theange 10 on the cap 4.

In 0 eration, the cane y 1 is placed over the tu ing 2 in the usuamanner with the two parts of the contractible sleeve 5 separated so asto ,permit the free movement of the canopy on the tubing 2, and with thecap 4 either entirely disconnected from the ring 3 or moved on said ringto its outermost position. The canopy is now moved on the tubing 2 untilthe inner edge thereof fits snugly against the wall. The cap 4 is thenscrewed u onto the ring 3 with the result that the. ange lO thereofbears against the inclined wall 12 of the insulating sleeve 5 andcontracts said sleeve to force the two'members thereof into frictionalengagement with the tubing 2. The canopy 1 is thus locked in. place uponthe tubing 2 and is efiectually insulated therefrom by the sleeve 5. Noprotruding screws orother exposed securing devices are employed as iscommon with the. canopy collars now in use, and, when finally applied,the vcanop is much more securely sustained than by t e use of the usualscrews referred to, by reason'of the fact that a broad 'ande ensiveinsulating surface is obtained between the sleeve 5 and the tubing 2. Itwill be evident thath'as the cap 4 is being screwedup onto the ring 3,it is im ossible for p the sleeve 5 to bemoved therewit as longitudinalmovement of said sleeve independently of the ring.3 is prevented bytheengagement of the shoulder 1 I with the flange 8.

It will be apparent from the foregoing description that my improvedcanopy collar may be used in connection with any of the usual forms ofcanopy and that the ring 3 may be secured to the canopy in any desiredmanner. In fact it is not necessary that the connection between the ring3 and the canopy 1 be a permanent one, the only essential being that thesleeve 5 be held in frictional engagement with the tubing 2.

Having described my invention, I claim 1. In a cano y collar, a splitsleeve of insulating materia adapted to be applied to a tubing andhaving an inclined or beveled surface, a two-part clamp embracing saidsleeve and of greater interior diameter than the bore of the sleeve, oneof the parts of said clamp preventing the independent longitudinalmovement of said sleeve, and the other acting upon said inclined surfacefor forcing the sleeve into frictional engagement with the tubing, and acanopy carried by said clamp.

2. In a canop collar, a split sleeve of insulating materia adapted to beapplied to a In witness whereof, I subscribe my signature, in thegresence of two witnesses.

' HOMAS H. BULLOCK, JR.

Witnesses:

H. S. SALT, E. E. BAYNORE.

